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MAINTENANCE The following supplementary maintenance schedule for 2.5 litre Turbo-Charged Diesel engine replaces the schedule printed in Workshop Bulletin 01/86 dated Daily or Weekly depending on operating conditions, and At (1,000 miles), (6,000 miles) and (12,000 miles) then every (12,000 miles). Every (24,000 miles) - check the turbo-charger boost pressure and if below the bottom limit - 44cm Hg - (8.5 clean the turbo-charger compressor housing internally, as CHECKING BOOST PRESSURE Maximum boost pressure - (9.7 Minimum boost pressure ( S . 5 1. Disconnect, from the turbo-charger, the hose to a suitable 'T' piece. 2. Connect a short length of slave hose to the turbo charger and connect the other end to the 'T' piece. 3 . Connect a further slave to the third leg of the 'T' piece and the other end to a pressure gauge capable of reading in excess of of Mercury. The pressure gauge hose must be long enough to cab of the vehicle so that the gauge can observed by the driver or passenger. 4. T o check the maximum boost pressure drive the vehicle normally but in such a manner that full with the engine speed held steady between 2,500 - 3,000 circumstances, the boost pressure should be 44-50 (9.7-8.5 If the pressure requires adjustment carry out the following instructions. 5 . Taking care not to burn the fingers remove the 6. Hold the rod with a pair of grips and release the locknut. 7. Turn the rod-end, by n o more than one turn, clockwise to increase the boost pressure or anti- 8. the actuator rod to the waste gate lever, Road test the vehicle again and if . with the clip and tighten t h e locknut. instructions 5 to 8. 10. the test equipment and reconnect the hoses. 11. If t h e correct boost pressure range is not attained Examine the air intake system for pipes or a blocked air filter. Check that the inlet manifold nuts and charger compressor housing and the actuator and joints are secure and not leaking. Check also that the hose between the 1 |